I do not use SMT for connectors, since the stresses of inserting, pulling out, or yanking plugs or daughter boards can definitely tear the foils loose.
Yup. Here's a communications card which I gave an emergency repair in September. It's ironic that these almost microscopic traces carry commands to a motor controller whose output uses conductors the thickness of a broomstick (1500 Amps at 600 Volts).
Thanks to the fragility of this SMD connector, a minor accident resulted in a local factory losing half its production capacity. (And they were facing a three day delay to take delivery of a new com board.)
I do not use SMT for connectors, since the stresses of inserting, pulling out, or yanking plugs or daughter boards can definitely tear the foils loose.
Yup. Here's a communications card which I gave an emergency repair in September. It's ironic that these almost microscopic traces carry commands to a motor controller whose output uses conductors the thickness of a broomstick (1500 Amps at 600 Volts).
Thanks to the fragility of this SMD connector, a minor accident resulted in a local factory losing half its production capacity. (And they were facing a three day delay to take delivery of a new com board.)
-- Jeff
GEDC4590TchLores.JPG
GEDC4640TchLores.JPG
I can see how that would happen. There doesn't appear to be any mechanical attachment for the connector. It's all dependent on solder.
